STAT 200 FINAL EXAM A (STAT 200 FINAL EXAM A)
University Of Maryland - Baltimore County
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STAT 200 FINAL EXAM A
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STAT 200 FINAL EXAM 
	 
 
 
1.	True or False. Justify for full credit. 	 	 	 	 	 	 
 
(a) If the variance of a data set is zero, then all the observations in this data set are zero. 
 
No, all the observations will be same but it is not necessary that all the observations will be zero, because if all the observations are same even then the variance will be zero. 
 
(b) If P(A) = 0.4 , P(B) = 0.5, and A and B are disjoint, then P(A AND B) = 0.9. 
 
No, because if A and B are disjoint the...
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